JP4523042B2 - Solid skin care composition comprising multiple layers - Google Patents

Description

  The present invention relates to a solid skin care composition comprising multiple layers. In particular, the present invention relates to solid skin care compositions comprising multiple layers, each of which is made from a different composition that provides unique characteristic benefits. Such characteristic benefits are not achieved to the extent that they are provided in separate phases if multiple layers are mixed together and provided as a single composition. The compositions of the present invention are particularly useful for cosmetic foundation products.

  The foundation composition can be applied to the face and other parts of the body to make the skin tone and texture uniform and hide pores, defects, fine lines and the like. The foundation composition is also applied to moisturize the skin, condition the skin oil and protect the skin from the adverse effects of sunlight, wind and other environmental factors.

  Foundation compositions are generally available in the form of liquid or cream suspensions, emulsions, gels, solid powders or anhydrous oil and wax compositions. Liquid form emulsion foundations are suitable in that they provide a moisturizing effect with water and the incorporated water soluble skin treatment. These liquid form foundations, however, are inconvenient for consumers to use and carry. Conversely, solid foundations that are compactly packed are suitable for use by consumers, but are usually more effective in moisturizing and covering the skin than liquid form foundations. Inferior.

  A foundation composition has been proposed that is solid but also in the form of an emulsion. Such a solid emulsion foundation aims to address the disadvantages of conventional liquid form foundations and solid foundations. These foundations can be filled into a wide variety of packages, including compacts, and are gaining popularity among consumers. As reference for disclosing such a foundation composition, Japanese Patent Publications A-2-88511, A-3-261707, A-7-267819, A-11-209243, US Pat. No. 5,362,482, And PCT International Publication No. WO 01/91704.

  Recently, consumers have found various performance and skin benefits in foundation products such as spreadability, fit to the skin, ease of skin adaptation, coverage, abrasion, long lasting, oil shine control, UV protection, And certain treatments provided by skin active agents. In addition, different consumer groups may desire different types of performance, such as a moist feel in exchange for a light feel. To achieve these benefits, foundation formulations must combine various components, which, depending on their physical and chemical properties, are difficult to formulate into a single product. In some cases. For example, the inclusion of a skin active agent for certain skin treatment benefits may result in a composition with poor general foundation function, eg, wear performance.

  On the other hand, cosmetic compositions comprising multiple layers or phases are known in the prior art. These products are usually offered in a kind of phase such as cream, gel or paste and usually focus on the color distinction of each layer. For example, US Pat. No. 4,980,155 (Revlon, Inc.) discloses a two-phase cosmetic composition comprising a hue composition and a gel paste composition. PCT International Publication No. WO 2004/105708 (Gamma Croma S.P.A.) discloses a multicolor cosmetic product having a solid consistency and comprising two or more cosmetic products of different colors. JP Patent Application Publication No. 1999-269025 (Noevir Co., Ltd.) discloses a double layer stick-shaped cosmetic product comprising an oil-based stick-shaped composition and a water-based stick-shaped composition. Yes. JP Patent Application Publication No. 2002-97112 discloses a solid cosmetic composition having different colors and a method for producing the same. None of them disclose multilayer skin care compositions that are in the form of water-in-oil emulsions and oil-in-water emulsions that are solid at ambient temperature.

  Based on the foregoing, there is a need for solid skin care compositions that provide multiple benefits provided by components that are difficult to formulate into a single composition. Specifically, for cosmetic foundation products, there is a need for solid compositions that provide good spreadability and good skin care benefits, particularly good penetration of skin active agents, in one product.

  None of the existing technology provides all of the advantages and benefits of the present invention.

  The present invention relates to a multilayer solid skin care composition comprising a first layer that is solid at 45 ° C. and a water-in-oil emulsion and a second layer that is solid at 45 ° C. and is an oil-in-water emulsion containing a benefit agent. The oil-in-water emulsion layer and the water-in-oil emulsion layer are provided in the same package in a manner that allows the first and second layers to be applied simultaneously. Providing multilayer compositions in such a way that they can be applied simultaneously provides characteristic benefits for each layer as a whole composition, otherwise these benefits are combined into one composition. In some cases, profits may be impaired or other performance may be degraded.

  The present invention is suitable for any skin care composition in solid form, such as cosmetic foundations, blushers, sunscreens, eye shadows, lipsticks, antiperspirant sticks, dermatological ointments, and others. One particularly preferred embodiment in connection with the present invention is a cosmetic foundation made up of a number of visually distinct layers.

  These and other features, aspects and advantages of the present invention will become apparent to those skilled in the art upon reading the present disclosure in conjunction with the appended claims.

  While the specification concludes with claims that particularly point out and distinctly claim the invention, it is believed the present invention will be better understood from the following description.

  All percentages, ratios and ratios used herein are based on the weight of the composition of each layer, unless otherwise specified. All such weights for the presented ingredients are based on the concentration of the active substance and thus do not include carriers or by-products that may be included in commercial materials.

  Ingredients such as active substances and other ingredients useful herein may all be classified or described by cosmetic and / or therapeutic benefit or mode of action they are envisioned. However, it should be understood that the active substances and other ingredients useful herein may in some cases provide multiple cosmetic and / or therapeutic benefits, or may act in multiple modes of action. It is. Accordingly, the classifications herein are for convenience only and are not intended to limit a component to the applications specifically described or listed.

First Layer and Second Layer The composition of the present invention comprises multiple layers, ie at least a first layer and a second layer. By providing the multilayer composition in such a way that they can be applied simultaneously, the composition as a whole provides characteristic benefits to each layer, otherwise these benefits are combined into one composition. In some cases, other performance is impaired or other performance is degraded. Any number of layers can be included in the entire composition, but the discussion will focus on the entire composition having two layers.

  The first and second layers have different compositions and are designed to provide different benefits based on at least one benefit agent included in either layer. For convenience, a layer containing such a benefit agent is referred to as a second layer, but this does not require that the first layer has no benefit agent. The first and second layers may contain different benefit agents, different combinations of benefit agents, or different concentrations of the same benefit agent. In the context of the present invention, a “beneficial agent” is a component that provides specific skin care benefits characteristic of the use of skin care products. Typically, the particular benefit agent contained in the second layer is less compatible with the particular component contained in the first layer, or the particular benefit agent in the second layer is one in the first and second layers. When combined with the composition, the overall performance of the composition is degraded.

  The composition includes a water soluble skin active agent as a benefit agent. There are many useful skin active agents that are water soluble and that are preferred for inclusion in skin care compositions. However, if a water-soluble skin active agent is included in the water-in-oil emulsion, the continuous oil phase may prevent the water-soluble skin care agent from contacting the skin, making it difficult to penetrate the water-soluble skin care agent into the skin. It may be. Penetration of the water-soluble skin active agent into the skin is primarily accomplished by including the water-soluble skin active agent in the oil-in-water emulsion composition and providing them in a manner that allows the first and second layers to be applied to the skin simultaneously. Remarkably improved. In other words, both the skin care benefit of the oil-in-water emulsion composition and the make-up benefit of the water-in-oil emulsion can be provided by the multilayer product of the present invention.

  Since the first and second layers of the present invention are solid at room temperature, they are not dissolved or mixed at all, or only slightly dissolved or mixed with each other during storage and after each use. The first and second layers are provided in a manner that allows the user to apply both layers to the skin simultaneously. A preferred method is to provide both layers on the same package body, such as a bread, jar, or stick applicator. The package body may comprise a suitable applicator, such as a sponge or brush. Preferably, the first and second layers are formulated to exhibit similar rheological properties when subjected to pressure / heat from a finger or applicator in use.

  The first and second layers can be provided in any ratio that is required to provide the targeted benefit. Preferably, the first and second layers are provided in a weight ratio of about 1:99 to about 99: 1, more preferably about 1: 9 to about 9: 1. The first and second layers are preferably visually distinguishable so that the different benefits / characteristics of these layers are communicated to the user. A colorant may be suitably included in at least one of the first or second layers to make the layers visually distinguishable.

In the present invention, the composition of the first layer takes the kind of the water-in-oil emulsion phase, and the composition of the second layer takes the form of the oil-in-water emulsion phase. Take a kind. Water-in-oil emulsions are useful for providing a good make-up benefit to the skin by including an oil-soluble component in the composition, while at the same time being fresh after the water and / or volatile oil has evaporated. Leave a cool feel. Oil-in-water emulsions are useful for providing skin care benefits by including a water soluble skin active agent in the composition, while providing a fresh and cool application feel.

  In one highly preferred embodiment, the composition is a cosmetic foundation.

The water-in-oil emulsion composition of the first layer is preferably the following components:
(A) about 10% to about 50%, preferably about 15% to about 35% volatile silicone oil;
(B) from about 0.5% to about 20%, preferably from about 1% to about 15%, non-volatile oil;
(C) about 5% to about 45% pigment powder, preferably about 15% to about 30% pigment powder;
(D) about 1% to about 10%, preferably about 2% to about 5% solid wax;
(E) about 0.5% to about 5%, preferably about 1% to about 4% of a lipophilic surfactant, and (f) such that the total concentration of volatile silicone oil and water exceeds about 40%. An amount of water, preferably from about 10% to about 35% water.

The oil-in-water emulsion composition of the second layer has the following components:
(A) about 20% to about 60%, preferably about 30% to about 50% water,
(B) about 0.1% to about 4%, preferably about 0.3% to about 2% of a hydrophilic surfactant;
(C) from about 5% to about 40%, preferably from about 10% to about 30% pigment powder;
(D) from about 1% to about 20%, preferably from about 5% to about 15%, non-volatile oil;
(E) about 1% to about 30%, preferably about 5% to about 20% volatile silicone oil, and (f) about 1% to about 15%, preferably about 4% to about 10% aliphatic. Contains compounds and / or fatty acid salts.

  The oil-in-water emulsion layer further comprises at least one benefit agent selected from water soluble skin active agents. The composition of each layer is formulated to have a viscosity value of about 100 mPas to about 10,000 mPas, preferably about 300 mPas to about 3,000 mPas when subjected to a temperature of about 55 ° C to about 90 ° C.

As will be explained in detail in the following context, the composition of each layer is formulated and formed separately. After being formulated and formed, the respective layers can be combined during the packaging process by dispensing the respective layers simultaneously in a package body, such as a bread, in a spiral, spiral, stick, flower, etc. arrangement. In order to keep the two layers separated from each other for a long time, as shown in the diagram of FIG. 5, a (0.16 g / cm ³ , −1600 mPas), b (0.16 g / cm ³ , 600 mPas), c The viscosity difference and the density difference between the compositions of each layer are maintained in the region defined by four points (−0.16 g / cm ³ , −600 mPas) and d (−0.16 g / cm ³ , 1600 mPas). It is preferable to blend each layer. The methods used to adjust the density and viscosity of the composition of each layer are known to those skilled in the art. It has been found that when the density and viscosity differences between the compositions of each layer are in the preferred region, the two layers exhibit the desired physical stability over time. In order to make the two layers visually distinguishable, the preferred method is to use different types and / or concentrations of pigment in the composition of each layer. Details of the types and concentrations of the components contained in each layer are as follows.

Benefit Agent The composition of the present invention comprises a benefit agent selected from water soluble skin active agents.

Water-soluble skin active agent The oil-in-water emulsion of the present invention comprises a safe and effective amount of a water-soluble skin active agent. As used herein, the term “water-soluble skin active agent” means an active ingredient that provides a cosmetic and / or therapeutic effect to the application area on the skin and is soluble in water. Water-soluble skin active agents useful herein include skin lightening agents, anti-aging agents, anti-acne agents, emollients, non-steroidal anti-inflammatory agents, local anesthetics, artificial tanning agents, antiseptics, antibacterials and Antifungal active substance, skin soothing agent, sunscreen agent, skin barrier repair agent, wrinkle prevention agent, skin atrophy prevention agent, lipid, sebum inhibitory substance, sebum inhibitory substance, skin sensory agent, proteolytic enzyme inhibitor, skin tightening agent (Skin tightening agents), itching inhibitors, hair growth inhibitors, desquamating enzyme enhancers, saccharification inhibitors, and mixtures thereof. When included, the oil-in-water composition comprises from about 0.001% to about 30%, preferably from about 0.001% to about 10% of at least one water soluble skin active agent.

  Skin lightening agents useful herein refer to active ingredients that improve excess pigmentation when compared to before treatment. Skin lightening agents useful herein include ascorbic acid compounds, azelaic acid, butylhydroxyanisole, gallic acid and its derivatives, glycyrrhizic acid, hydroquinone, kojic acid, arbutin, mulberry extract, and mixtures thereof. . The use of a combination of skin lightening agents is considered beneficial in that they can provide skin lightening benefits through different mechanisms.

  Ascorbic acid compounds useful herein include essentially L-form ascorbic acid, ascorbate, and derivatives thereof. Ascorbates useful herein include sodium, potassium, lithium, calcium, magnesium, barium, ammonium and protamine salts. Ascorbic acid derivatives useful herein include, for example, esters of ascorbic acid and ester salts of ascorbic acid. Particularly preferred ascorbic acid compounds are esters of ascorbic acid and glucose, commonly referred to as L-ascorbic acid 2-glucoside or ascorbyl glucoside, 2-o-D-glucopyranosyl-L-ascorbic acid and metal salts thereof. And L-ascorbic acid phosphate ester salts such as sodium ascorbyl phosphate, potassium ascorbyl phosphate, magnesium ascorbyl phosphate, and calcium ascorbyl phosphate. Commercially available ascorbic acid compounds include magnesium ascorbyl phosphate available from Showa Denko, 2-o-D-glucopyranosyl-L-ascorbic acid available from Hayashibara, and Roche. An example is available L-ascorbyl phosphate phosphate under the trade name STAY C.

  Anti-aging agents useful herein include vitamin B3 compounds, such as those having the formula:

式中、Ｒは−ＣＯＮＨ₂（例えば、ナイアシンアミド）又は−ＣＨ₂ＯＨ（例えば、ニコチニルアルコール）、これらの誘導体とこれらの塩である。前出のビタミンＢ₃化合物の代表的な誘導体としては、ニコチン酸の非血管拡張性エステル類、ニコチニルアミノ酸類、カルボン酸類のニコチニルアルコールエステル類、ニコチン酸Ｎ−オキシド及びナイアシンアミドＮ−オキシドを包含する、ニコチン酸エステル類が挙げられる。好ましいビタミンＢ₃化合物は、ナイアシンアミド及びニコチン酸トコフェロールであり、より好ましいものはナイアシンアミドである。好ましい実施形態では、ビタミンＢ₃化合物は限られた量の塩の形態を含有し、より好ましくはビタミンＢ₃化合物の塩は実質的に含まれない。好ましくは、ビタミンＢ₃化合物は、約５０％未満のそのような塩を含有し、より好ましくは本質的に塩の形態を含まない。本明細書で極めて有用な市販のビタミンＢ₃化合物としては、ライリー・インダストリーズ（Reilly Industries Inc）から入手可能なナイアシンアミドＵＳＰが挙げられる。

In the formula, R is —CONH ₂ (for example, niacinamide) or —CH ₂ OH (for example, nicotinyl alcohol), derivatives thereof and salts thereof. Representative derivatives of the aforementioned vitamin B ₃ compounds include non-vasodilatory esters of nicotinic acid, nicotinyl amino acids, nicotinyl alcohol esters of carboxylic acids, nicotinic acid N-oxide and niacinamide N-oxide. And nicotinic acid esters. Preferred vitamin B ₃ compounds are niacinamide and tocopherol nicotinate, more preferred is niacinamide. In a preferred embodiment, the vitamin B ₃ compound contains a limited amount of salt form, more preferably substantially free of vitamin B ₃ compound salt. Preferably, the vitamin B ₃ compound contains less than about 50% of such salts, and more preferably is essentially free of salt forms. A commercially useful vitamin B ₃ compound that is very useful herein includes niacinamide USP available from Reilly Industries Inc.

  Other skin active agents useful herein include N-acetyl D-glucosamine (eg, N-acetyl D-glucosamine available from Technical Sourcing International) and panthenol (eg, DL panthenol available from Alps Pharmaceutical Inc.).

Water The water-in-oil emulsion layer and the oil-in-water emulsion layer of the present invention contain a sufficient amount of water to provide a discontinuous or continuous water phase. In a preferred cosmetic foundation embodiment, the water-in-oil emulsion composition comprises volatile silicone oil and an amount of water such that the total amount of water exceeds about 40% of the composition, more preferably from about 10% to about The oil-in-water emulsion composition comprises 35% water and comprises about 20% to about 60%, more preferably about 30% to about 50% water. Without being limited by theory, the amount of water herein is believed to give the skin an improved refreshing and light feel without necessarily leaving a dry feel on the skin. Furthermore, this amount of water allows for the inclusion of a water soluble skin active agent as described above.

  In the present invention, deionized water is usually used. Water from natural sources including mineral cations can also be used depending on the desired properties of the product.

Volatile Silicone Oil Both the water-in-oil layer and the oil-in-water layer of the present invention comprise a volatile silicone oil. In a preferred cosmetic foundation embodiment, the water-in-oil emulsion composition comprises about 10% to about 50%, more preferably about 15% to about 35% volatile silicone oil, wherein the volatile silicone oil and water The total amount is controlled to exceed about 40% of the composition, and the oil-in-water emulsion composition comprises about 1% to about 30%, more preferably about 5% to about 20% volatile silicone oil. Without being limited by theory, it is believed that the types and concentrations of volatile silicone oils herein provide the skin with improved refreshment and light feel without necessarily leaving a dry feel on the skin. Yes.

  Volatile silicone oils useful herein are selected from those having a boiling point of about 60 to about 260 ° C., preferably those having 2 to 7 silicon atoms. Volatile silicone oils useful herein include polyalkyl or polyaryl siloxanes having the following structure (I):

式中、Ｒ⁹³は、独立にアルキル又はアリールであり、ｐは約０〜約５の整数である。Ｚ⁸はシリコーン鎖の末端を止める基を表す。好ましくは、Ｒ⁹³には、メチル、エチル、プロピル、フェニル、メチルフェニル及びフェニルメチルが挙げられ、Ｚ⁸には、ヒドロキシ、メチル、メトキシ、エトキシ、プロポキシ及びアリールオキシが挙げられる。より好ましくは、Ｒ⁹³及びＺ⁸はメチルである。好ましい揮発性シリコーン化合物は、ヘキサメチルジシロキサン、オクタメチルトリシロキサン、デカメチルテトラシロキサン、ヘキサデカメチルヘプタシロキサンである。本明細書で有用な市販の揮発性シリコーン化合物には、商標名ＳＨ２００Ｃ−１ｃｓのオクタメチルトリシロキサン、商標名ＳＨ２００Ｃ−１．５ｃｓのデカメチルテトラシロキサン、商標名ＳＨ２００Ｃ−２ｃｓのヘキサデカメチルヘプタシロキサン（全てダウ・コーニング（Dow Corning）から入手可能）が包含される。

Wherein R ⁹³ is independently alkyl or aryl, and p is an integer from about 0 to about 5. Z ⁸ represents a group for terminating the terminal of the silicone chain. Preferably, R ⁹³ includes methyl, ethyl, propyl, phenyl, methylphenyl and phenylmethyl, and Z ⁸ includes hydroxy, methyl, methoxy, ethoxy, propoxy and aryloxy. More preferably, R ⁹³ and Z ⁸ are methyl. Preferred volatile silicone compounds are hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, hexadecamethylheptasiloxane. Commercially available volatile silicone compounds useful herein include octamethyltrisiloxane under the trade name SH200C-1cs, decamethyltetrasiloxane under the trade name SH200C-1.5cs, hexadecamethylheptasiloxane under the trade name SH200C-2cs. (All available from Dow Corning).

  Volatile silicone oils useful herein also include cyclic silicone compounds having the formula:

式中、Ｒ⁹³は独立してアルキル又はアリールであり、ｎは３〜７の整数である。

In the formula, R ⁹³ is independently alkyl or aryl, and n is an integer of 3 to 7.

Preferably R ⁹³ includes methyl, ethyl, propyl, phenyl, methylphenyl and phenylmethyl. More preferably, R ⁹³ is methyl. Preferred volatile silicone compounds are octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and tetradecamethylcyclohexasiloxane. Commercially available volatile silicone compounds useful herein include octamethylcyclotetrasiloxane under the trade name SH244, decamethylcyclopentasiloxane under the trade names DC245 and SH245, and dodecamethylcyclohexasiloxane under the trade name DC246 (all Dow -Available from Dow Corning).

Nonvolatile Oil Both the water-in-oil and oil-in-water emulsion layers of the present invention comprise a non-volatile oil. In preferred cosmetic foundation embodiments, the water-in-oil emulsion composition comprises from about 0.5% to about 20%, more preferably from about 1% to about 15%, non-volatile oil; an oil-in-water emulsion composition Comprises about 1% to about 20%, more preferably about 5% to about 15%, non-volatile oil. Without being limited by theory, it is believed that the type and concentration of non-volatile oil herein provides improved smoothness to the skin and also relieves the dry feel of the skin.

  Nonvolatile oils useful herein include, for example, tridecyl isononanoate, isostearyl isostearate, isocetyl isostearate, isopropyl isostearate, isodecyl isonoanoate, cetyl octano Ate, isononyl isononanoate, diisopropyl myristate, isocetyl myristate, isotridecyl myristate, isopropyl myristate, isostearyl palmitate, isocetyl palmitate, isodecyl palmitate, isopropyl palmitate, octyl palmitate, Caprylic acid / capric acid triglyceride, glyceryl tri-2-ethylhexanoate, neopentylglycol di (2-ethylhexanoate), diisopropyldimerate, tocopherol, tokov Roll acetate, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, malt oil, pasanqua oil, castor oil, flaxseed oil, safflower Oil, cottonseed oil, perilla oil, soybean oil, peanut oil, teaseed oil, kaya oil, rice bran oil, cinnamon tung oil, Japanese tung oil, jojoba oil, rice bud oil, glycerol trioctanate, glycerol triisopalmi Tate, trimethylolpropane triisostearate, isopropyl myristate, glycerol tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, lanolin, lanolin liquid, paraffin liquid, squalane, petrolatum, and these It is a mixture. Commercially available oils include, for example, the trade name Crodamol TN tridecyl isononanoate available from Croda, Hexalan available from Nisshin Seiyu, and Eisai ( Tocopherol acetates available from Eisai).

  Nonvolatile oils useful herein also include polyalkyl or polyaryl siloxanes having the following structure (I):

式中、Ｒ⁹³はアルキル又はアリールであり、ｐは約７〜約８，０００の整数である。Ｚ⁸はシリコーン鎖の末端を止める基を表す。シロキサン鎖（Ｒ⁹³）上又はシロキサン鎖Ｚ⁸の末端において置換された前記アルキル又はアリール基は、結果として生じるシリコーンが室温で流体のままであり、分散性があり、皮膚に適用した時に刺激性がなく、毒性やその他の害もなく、前記組成物の他の構成成分と適合性があり、通常の使用及び保存条件下で化学的に安定している限り、いかなる構造をも有することができる。好適なＺ⁸としては、ヒドロキシ、メチル、メトキシ、エトキシ、プロポキシ、及びアリールオキシが挙げられる。ケイ素原子上の２つのＲ⁹³基は、同一の基又は異なる基を表してもよい。好ましくは、２つのＲ⁹³基は同一の基を表す。好適なＲ⁹³としては、メチル、エチル、プロピル、フェニル、メチルフェニル及びフェニルメチルが挙げられる。好ましいシリコーン化合物はポリジメチルシロキサン、ポリジエチルシロキサン、及びポリメチルフェニルシロキサンである。ジメチコンとしても知られるポリジメチルシロキサンは、特に好ましい。使用され得るポリアルキルシロキサン類としては、例えば、ポリジメチルシロキサン類が挙げられる。これらのシリコーン化合物は、例えば、ビスカシル（Viscasil）（登録商標）及びＳＦ９６シリーズでゼネラル・エレクトリック社（General Electric Company）から、及びダウ・コーニング（Dow Corning）２００シリーズでダウ・コーニング（Dow Corning）から入手可能である。

Wherein R ⁹³ is alkyl or aryl and p is an integer from about 7 to about 8,000. Z ⁸ represents a group for terminating the terminal of the silicone chain. The alkyl or aryl group substituted on the siloxane chain (R ⁹³ ) or at the end of the siloxane chain Z ⁸ is such that the resulting silicone remains fluid at room temperature, is dispersible and is irritating when applied to the skin. It can have any structure as long as it is compatible with the other components of the composition and is chemically stable under normal use and storage conditions without toxicity or other harm . Suitable Z ⁸ includes hydroxy, methyl, methoxy, ethoxy, propoxy, and aryloxy. The two R ⁹³ groups on the silicon atom may represent the same group or different groups. Preferably, the two R ⁹³ groups represent the same group. Suitable ^R93 includes methyl, ethyl, propyl, phenyl, methylphenyl and phenylmethyl. Preferred silicone compounds are polydimethylsiloxane, polydiethylsiloxane, and polymethylphenylsiloxane. Polydimethylsiloxane, also known as dimethicone, is particularly preferred. Examples of polyalkylsiloxanes that can be used include polydimethylsiloxanes. These silicone compounds are, for example, from General Electric Company in the Viscasil® and SF96 series and from Dow Corning in the Dow Corning 200 series. It is available.

  Polyalkylaryl siloxane liquids can also be used and include, for example, polymethylphenylsiloxanes. These siloxanes are, for example, from General Electric Company as SF1075 methylphenyl solution, from Dow Corning as 556 cosmetic grade solution, or Shin-Etsu Chemical as KF-56. Etsu Chemical Co., Ltd.).

  The non-volatile oils useful herein are also various grades of mineral oils. Mineral oils are liquid mixtures of hydrocarbons obtained from petroleum. Specific examples of suitable hydrocarbons include paraffin oil, mineral oil, dodecane, isododecane, hexadecane, isohexadecane, eicosene, isoeicosene, tridecane, tetradecane, polybutene, polyisobutene, and mixtures thereof.

Solid Wax The water-in-oil emulsion composition of the present invention comprises from about 1% to about 10%, preferably from about 2% to about 5% solid wax. Without being bound by theory, the type and concentration of the solid wax herein does not negatively affect the spreadability when applied to the skin, and the fresh and light skin feel of the skin, and does not affect the consistency of the composition. , And the ability to cover the skin.

  The solid waxes useful herein are paraffin wax, microcrystalline wax, ozokerite wax, ceresin wax, carnauba wax, candelilla wax, eicosanyl behenate, and mixtures thereof. Preference is given to using a mixture of waxes.

  Commercially available solid waxes useful herein include candelilla wax NC-1630 available from Cerarica Noda, ozokerite wax SP-1021 available from Strahl & Pitsh. And eicosanyl behenate available from Cas Chemical.

Lipophilic Surfactant The water-in-oil emulsion composition of the present invention comprises a lipophilic surfactant, preferably from about 0.5% to about 5% by weight of the water-in-oil emulsion composition, preferably about 1% to about 4% by weight. The lipophilic surfactant herein has an HLB value of less than about 8.

  The HLB value is a theoretical index value describing the hydrophilic-hydrophobic balance of a specific compound. In general, it is recognized that the HLB index ranges from 0 (very hydrophobic) to 40 (very hydrophilic). The HLB value of the lipophilic surfactant can be found in tables and charts known in the art and may be calculated using the following general formula: HLB = 7 + (hydrophobic group value) + (Value of hydrophilic group). Methods for calculating HLB and HLB of compounds are described in “Surfactant Science Series, Volume 1: Nonionic Surfactant”, pages 606-13, M.C. J. et al. It is described in detail in M.J.Schick (Marcel Dekker Inc., New York, 1966).

  Without being bound by theory, it is believed that the type and concentration of lipophilic surfactant herein provides a stable water-in-oil emulsion that takes into account the other components of the present invention.

  The lipophilic surfactant can be an ester type surfactant. Ester-type surfactants useful herein include sorbitan monoisostearate, sorbitan diisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan dioleate, sorbitan sesquioleate, glyceryl monoiso Stearate, glyceryl diisostearate, glyceryl diiostearate, glyceryl monooleate, glyceryl dioleate, glyceryl sesquioleate, diglyceryl diisostearate, diglyceryl dioleate, diglycerin mono Examples include isostearyl ether, diglycerin diisostearyl ether, and mixtures thereof.

  Commercially available ester type surfactants include, for example, the trade name Crill 6 sorbitan isostearate available from Croda, and the trade name Arlacel 83 available from Kao Atras. Sorbitan sesquioleate.

  The lipophilic surfactant can be a silicone type surfactant. Silicone-type surfactants useful herein are (i), (ii), and (iii) as shown below, and mixtures thereof.

  (I) Dimethicone copolyols having the formula

式中、ｘは５〜１００の整数であり、ｙは１〜５０の整数であり、ａは０以上であり、ｂは０以上であり、ａ＋ｂの合計平均は１〜１００である。

In the formula, x is an integer of 5 to 100, y is an integer of 1 to 50, a is 0 or more, b is 0 or more, and the total average of a + b is 1 to 100.

  (Ii) Dimethicone copolyols having the formula

式中、Ｒは水素、メチル、及びこれらの組み合わせから成る群から選択され、ｍは５〜１００の整数であり、ｘは独立して０以上であり、ｙは独立して０以上であり、ｘ＋ｙの合計は１〜１００である。

Wherein R is selected from the group consisting of hydrogen, methyl, and combinations thereof, m is an integer from 5 to 100, x is independently 0 or more, y is independently 0 or more, The sum of x + y is 1-100.

  (Iii) a branched polyether-polydiorganosiloxane emulsifier herein having the formula:

式中、Ｒ¹は約１〜約２０個の炭素を有するアルキル基であり；Ｒ²は次式である。

Wherein R ¹ is an alkyl group having from about 1 to about 20 carbons; R ² is of the formula

式中、ｇは約１〜約５であり；ｈは約５〜約２０であり；Ｒ³はＨ又は約１〜約５個の炭素を有するアルキル基であり、ｅは約５〜約２０であり；ｆは約０〜約１０であり；ａは約２０〜約１００であり；ｂは約１〜約１５であり；ｃは約１〜約１５であり；ｄは約１〜約５である。

Wherein g is from about 1 to about 5; h is from about 5 to about 20; R ³ is H or an alkyl group having from about 1 to about 5 carbons; e is from about 5 to about 20 F is about 0 to about 10; a is about 20 to about 100; b is about 1 to about 15; c is about 1 to about 15; d is about 1 to about 5 It is.

  Commercially available silicone surfactants include, for example, dimethicone copolyols, all available from Dow Corning, DC5225C, BY22-012, BY22-008, SH3746M, SH3771M, SH3772M, SH3773M, SH3775M, SH3748, SH3749 and DC5200, and branched polyether-polydiorganosiloxane emulsifiers such as PEG-9 having an HLB of about 4 and a molecular weight of about 6,000 with the trade name KF-6028 available from ShinEtsu Chemical. Polydimethylsiloxyethyl dimethicone.

  In a preferred embodiment, the lipophilic surfactant is a mixture of at least one ester type surfactant and at least one silicone type surfactant, providing a stable emulsion for the other essential components of the present invention. To do.

Pigment Powder Component Both the water-in-oil emulsion and the oil-in-water emulsion layer of the present invention include a pigment powder component. In a preferred cosmetic foundation composition, the first layer water-in-oil emulsion composition comprises from about 5% to about 45%, more preferably from about 15% to about 30% of the pigment powder component. The pigment powder contained in the water-in-oil emulsion composition is usually inherently hydrophobic or hydrophobized.

  In a preferred cosmetic foundation embodiment, the second layer oil-in-water emulsion composition comprises from about 5% to about 40%, more preferably from about 10% to about 30% of the pigment powder component. The pigment powder contained in the oil-in-water emulsion composition is usually inherently hydrophilic or non-hydrophobic.

  By keeping the pigment component concentration low, the overall composition remains malleable, wettable, and flexible to accommodate other components that give a fresh, light feel. The pigment type and concentration are selected to provide, for example, hue, coverage, UV protection benefits, excellent wear performance, and composition stability.

  Pigment powders useful in the present invention include inorganic and organic powders such as talc, mica, sericite, silica, magnesium silicate, synthetic fluorophlogopite, calcium silicate, aluminum silicate, bentonite and montmorillonite, pearl pigments such as Alumina, barium sulfate, dicalcium phosphate, calcium carbonate, titanium oxide, ultrafine titanium oxide, zirconium oxide, zinc oxide, hydroxyapatite, iron oxide, iron titanate, ultramarine blue, Prussian blue, chromium oxide, chromium hydroxide , Cobalt oxide, cobalt titanate, titanium oxide coated mica, organic powder such as polyester, polyethylene, polystyrene, methyl methacrylate resin, cellulose, 12-nylon, 6-nylon, styrene-acrylic acid copolymers, poly Pyrene, vinyl chloride polymers, tetrafluoroethylene ethylene polymer, boron nitride, fish scale guanine, Rekitaru color dyes, and lakes natural color dyes and the like. Such pigments may be treated with hydrophobic treating agents such as silicones such as methicone, dimethicone and perfluoroalkylsilanes, aliphatic materials such as stearic acid and hydrogenated disodium glutamate, metal soaps such as Examples include aluminum dimyristate, hydrogenated tallow glutamate, hydrogenated lecithin, lauroyl lysine, aluminum salts of perfluoroalkyl phosphate, and aluminum hydroxide to reduce the activity of titanium dioxide, and mixtures thereof.

  Commercially available hydrophobic pigment powder constituents include iron oxide and cyclopentasiloxane and dimethicone and hydrogenated disodium glutamate: SA / NAI-Y-10 / D5 (70%) / available from Miyoshi Kasei SA / NAI-R-10 / D5 (65%) / SA / NAI-B-10 / D5 (75%), iron oxide and dimethicone and hydrogenated disodium glutamate: SA / NAI-Y available from Miyoshi Kasei -10 / SA / NAI-R-10 / SA / NAI-B-10, iron oxide and methicone: SI Mapico yellow light lemon XLO / SI pure red iron oxide R-1599 available from Daito Kasei / SI pure red iron oxide R-3098 / SI pure red iron oxide R-4098 / SI black iron oxide number 2 7. Titanium dioxide and talc and methicone: SI-T-CR-50Z available from Miyoshi Kasei, titanium dioxide and methicone: SI-titanium dioxide IS, titanium dioxide and dimethicone available from Miyoshi Kasei: available from Miyoshi Kasei SA-titanium dioxide CR-50, titanium dioxide and dimethicone and hydrogenated disodium glutamate: SA / NAI-TR-10 available from Miyoshi Kasei, titanium dioxide and methicone: SI-TTO-S available from Miyoshi Kasei -3Z, titanium dioxide and dimethicone and aluminum hydroxide and stearic acid: SAST-UFTR-Z available from Miyoshi Kasei, alumina and titanium dioxide and methicone: SI-LTSG30AFLAKE H (5%) LHC available from Miyoshi Kasei Titanium dioxide and dimethyl SI-FTL-300 available from Miyoshi Kasei, talc and methicone: SI-talc JA13R LHC available from Miyoshi Kasei, talc and methicone: SI talc CT-20 available from Miyoshi Kasei, mica and methicone: SI mica, silica and dimethicone available from Miyoshi Kasei: SA-SB-300 available from Miyoshi Kasei; Mica and methicone: SI sericite, mica and dimethicone available from Miyoshi Kasei: SA available from Miyoshi Kasei Sericite, mica and C9-15 Fluoroalcol phosphates and triethoxycaprylylsilane: FOTS-52 sericite FSE, talc and C9-15 Fluoroalcol phosphate available from Daito Kasei And triethoxycaprylouis Rusilane: FOTS-52 talc JA-13R available from Daito Kasei, boron nitride and methicone: SI02 boron nitride SHP-6, boron nitride and C9-15 Fluoroalcol phosphates and triethoxy available from Daito Kasei Caprylylsilane: FOTS-52 boron nitride, mica and titanium dioxide and methicone available from Daito Kasei: SI sericite TI-2, mica and titanium dioxide and methicone available from Miyoshi Kasei: from Miyoshi Kasei Available SI mica TI-2, talc and titanium dioxide and methicone: SI talc TI-2 available from Miyoshi Kasei, Lauroyllysine: AMIHOPE LL available from Ajinomoto, synthetic fluorophlogopite and methicone: Topy From Topy Industries Hand possible PDM-5L (S) / PDM-10L (S) / PDM-20L (S) / PDM-40L (S) and the like.

  Commercially available hydrophilic pigment powder components are titanium dioxide: titanium dioxide CR-50 available from Ishihara Techno Corporation, titanium dioxide: titanium dioxide TTO-S-3 available from Ishihara Techno Corporation, mica. : Mica Y-3000 available from Yamaguchi Mica, Talc: Talc JA13R available from Asada Milling, Silica: MK-30 available from Fuji Silysia, Titanium Industry ( Iron oxide available from Titan Kogyo, Boron nitride: Boron nitride SHP-6 available from Mizushima Ferroalloy, Barium sulfate: Preletlet sulfuric acid available from Sakai Chemical Industry Examples include barium H, HF, HG, HL, HM, and HP.

Hydrophilic Surfactant The oil-in-water emulsion composition of the present invention contains a hydrophilic surfactant. In preferred cosmetic foundation embodiments, the oil-in-water emulsion composition comprises from about 0.1% to about 4%, more preferably from about 0.3% to about 2% hydrophilic surfactant.

  A wide variety of hydrophilic surfactants can be used herein. Known or conventional hydrophilic surfactants, provided that the selected hydrophilic surfactant is chemically and physically compatible with the essential components of the composition and provides the desired dispersion properties. Can be used in the composition.

  Non-limiting examples of hydrophilic surfactants useful herein include sugar esters and polyesters, alkoxylated sugar esters and polyesters, C1-C30 fatty acid esters of C1-C30 aliphatic alcohols, C1 Alkoxylated derivatives of C1-C30 fatty acid esters of C30 aliphatic alcohols, alkoxylated ethers of C1-C30 fatty alcohols, polyglyceryl esters of C1-C30 fatty acids, C1-C30 esters of polyols, Various nonionic and anionic properties such as C1-C30 ethers of polyols, alkyl phosphates, polyoxyalkylene aliphatic ether phosphates, fatty acid amides, acyl lactylates, soaps, and mixtures thereof There are hydrophilic surfactants.

  Non-limiting examples of other hydrophilic surfactants for use herein include polyethylene glycol 20 sorbitan monolaurate (polysorbate 20), polyethylene glycol 5 soy sterol, steareth-20, ceteares-20, PPG-2 methyl glucose ether distearate, ceteth-10, polysorbate 80, cetyl phosphate, potassium cetyl phosphate, diethanolamine cetyl phosphate, polysorbate 60, glyceryl stearate, PEG-100 stearate, polyoxyethylene 20 sorbitan trioleate (polysorbate) 85), sorbitan monolaurate, polyoxyethylene 4-lauryl ether sodium stearate, polyglyceryl-4 isostearate, lauric acid hex Le, PPG-2 methyl glucose ether distearate, ceteth-10, diethanolamine cetyl phosphate, glyceryl stearate, PEG40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and mixtures thereof.

  Polyoxyalkylene hydrogenated castor oils useful herein include, for example, polyoxyethylene (20) hydrogenated castor oil, polyethylene (40) hydrogenated castor oil, and polyoxyethylene (100) hydrogenated castor oil, Examples include polyoxyethylene hydrogenated castor oils having 20 to 100 moles of ethylene oxide.

  Polyglycerin alkyl esters having C10-20 alkyl substituents useful herein include, for example, 6-10 moles of polyglyceryl-6 laurate, polyglyceryl-10 laurate, and polyglyceryl-10 stearate. What has a glycerin unit is mentioned.

  Polysorbates useful herein include those having 20 to 80 moles of ethylene oxide, such as, for example, polysorbate-20, polyborbate-40, polysorbate-60, and polysorbate-80.

  Polyethylene sterols and polyethylene cured sterols useful herein include those having 10-30 moles of ethylene oxide, such as polyethylene (10) phytosterol, polyethylene (30) phytosterol, and polyethylene (20) cholesterol. Is mentioned.

  Among the nonionic surfactants, polysorbates are preferable, and polysorbate-20, polysorbate-40, and mixtures thereof are more preferable.

  Commercially available hydrophilic surfactants include glyceryl stearate: Arlacel 161 from Uniqema.

Aliphatic compound and fatty acid salt The oil-in-water emulsion composition of the present invention contains an aliphatic compound or a fatty acid salt. In cosmetic foundation embodiments, preferably the oil-in-water emulsion composition comprises from about 1% to about 15%, more preferably from about 4% to about 10% aliphatic compounds or fatty acid salts.

  Aliphatic compounds and fatty acid salts useful herein include stearic acid (eg, stearic acid 750 available from Kao), sodium salt of stearic acid, palmitic acid, stearyl alcohol, cetyl alcohol , Behenyl alcohol, stearic acid, palmitic acid, polyethylene glycol ethers of stearyl alcohol or cetyl alcohol having an average of about 1 to about 5 ethylene oxide units, and mixtures thereof. Preferred aliphatic compounds are stearyl alcohol, cetyl alcohol, behenyl alcohol, polyethylene glycol ether of stearyl alcohol having an average of about 2 ethylene oxide units (Steares-2), polyethylene glycol ether of cetyl alcohol having an average of about 2 ethylene oxide units And mixtures thereof.

Additional components The compositions herein may further contain additional components, such as those conventionally used in topical products, for example, to provide aesthetic or functional benefits to the composition or skin. For providing perceptual benefits, therapeutic benefits, or preventative benefits related to appearance, smell or feel (the above-mentioned required materials themselves provide such benefits) It should be understood).

  The “CTFA Cosmetic Ingredient Handbook”, Second Edition (1992) describes a wide variety of non-limiting cosmetic and pharmaceutical ingredients commonly used in the industry, which are described in the present invention. Suitable for use in topical compositions. Such other materials may be dissolved or dispersed in the composition depending on the relative solubility of the components of the composition.

  Examples of suitable topical ingredients include anti-cellulite agents, antioxidants, radical scavengers, chelating agents, vitamins and their derivatives, abrasives, oil-absorbing powders, sebum-solidifying powders, film-forming polymers , Moisturizer, thickener, UV absorber, astringent, dye, essential oil, fragrance, structurant, emulsifier, solubilizer, anti-caking agent, antifoaming agent, binder, buffer, filler, modifier , PH adjusters, propellants, reducing agents, sequestering agents, cosmetic biocides, and preservatives.

Oil-absorbing powder Oil-absorbing powders are pigments that are particularly effective in absorbing oil, and can thus be included in the composition to absorb excess sebum from the skin. In particular, the oil-absorbing pigments herein have an oil absorbency of at least about 100 ml / 100 g, preferably at least about 200 ml / 100 g. Oil absorbency is a unit well known to engineers, and is JIS K5101 No. It can be measured by 21 “Test Method for Oil Absorbent Concentration”.

  Oil-absorbing powders useful herein include spherical silica, spherical silicone elastomers, and methyl methacrylate copolymers. Commercially available oil-absorbing powders useful herein are obtained from Miyoshi Kasei, Inc. under the trade name SILDEX H-52, which has an oil absorbency greater than 200 ml / 100 g. Possible spherical silica, vinyl dimethicone / methicone silsesquioxane crosspolymers available from ShinEtsu Chemical under the trade names KSP-100 and KSP-101 having an oil absorbency greater than 200 ml / 100 g, 100 ml / Cured polyorganosiloxane elastomer available from Dow Corning under the trade name TREFIL E-506C with an oil absorbency greater than 100 g, and the trade name SA-GMP with an oil absorbency greater than 100 ml / 100 g Available from GANZ Chemical at -0820, Miyoshi Kasei, In Mention may be made of methyl methacrylate copolymers surface-treated by c.).

Sebum-consolidating powder The sebum-consolidating powder useful herein has a shape resembling platelets and is coated with low crystalline zinc oxide, amorphous zinc oxide, or a mixture thereof. . The ratio of zinc oxide to powder is important to provide a sebum consolidation effect. The base material can be any organic or inorganic material useful for cosmetic use, including those described below under “Pigment Powder Components”. The sebum solidifying powder herein can be suitably made according to the method disclosed in US 2002/0031534 A1, which is incorporated herein by reference. The sebum solidifying powder can be surface treated. Sebum caking powders useful herein have the ability to sebum sebum, i.e., adsorb free fatty acids, diglycerides, and triglycerides and consolidate them by the formation of their zinc salts. Effective, the coating is formed within about 30 minutes. Furthermore, the initially shiny sebum changes the appearance to a dull film. Such ability is not selective for the type of oil absorbed and does not form a film after absorbing the oil, thus leaving a glossy gel and paste after absorbing sebum, It can be distinguished from other oil-absorbing powders. The change in appearance gives the user a noticeable signal that the sebum is being regulated. The sebum consolidation effect is conveniently evaluated by mixing a certain amount of powder with a certain amount of artificial sebum and mixing for a certain period of time until it solidifies or shows a dull appearance. Can do. The time taken for the mixture to set or change appearance is recorded. The shorter the time taken to solidify or change the appearance, the higher the consolidation effect of the powder.

  Commercially available sebum consolidated powder useful herein is mica coated with hydroxyapatite under the trade name PLV-20 and 20% zinc oxide, both available from Miyoshi Kasei, Inc. And the same powder surface-treated with methicone under the trade name SI-PLV-20.

Film-forming polymers Film-forming polymers are useful for imparting wear and / or transfer resistant properties to cosmetic products. Preferred polymers form a non-tacky coating that can be removed using a combination of water and a detergent such as soap.

Examples of suitable film-forming polymeric materials include the following:
a) sulfopolyester resins, for example AQ sulfopolyester resins such as AQ29D, AQ35S, AQ38D, AQ38S, AQ48S, and AQ55S (available from Eastman Chemicals);
b) Vinex resins available from Air Products, including polyvinyl acetate / polyvinyl alcohol polymers such as Vinex 2034, Vinex 2144, and Vinex 2019;
c) a water dispersible acrylic resin available under the trade name “Dermacryl” from National Starch, including acrylic resins such as Dermacryl LT;
d) Water-soluble copolymers of PVP, including polyvinylpyrrolidone (PVP), including PVP / VA S-630 and W-735, including Luviskol K17, K30, and K90 (available from BASF), and ISP PVP / dimethylaminoethyl methacrylate copolymers such as copolymer 845 and copolymer 937, as well as E.C., Encyclopedia of Polymer Science and Engineering, 2nd edition, volume 17, pages 198-257. S. With other PVP polymers disclosed by Barabas;
e) high molecular weight silicones, such as dimethicones and organic substituted dimethicones, especially those with viscosities above about 50,000 mPas;
f) high molecular weight hydrocarbon polymers with viscosities greater than about 50,000 mPas;
g) Organosiloxanes, including organosiloxane resins, fluid diorganopolysiloxane polymers and silicone ester waxes.

  Examples of these polymers and cosmetic compositions containing them are described in PCT International Publication No. WO 96/33689 (issued October 31, 1996), WO 97/17058 (1997), all of which are incorporated herein by reference. Issued May 15, and US Pat. No. 5,505,937 (Castrogiovanni et al., Issued April 9, 1996). Additional film-forming polymers suitable for use herein include aqueous emulsions described in PCT International Publication No. WO 98/18431 (issued May 7, 1998), which is incorporated herein by reference. And water-insoluble polymer materials and water-soluble film-forming polymers. Examples of high molecular weight hydrocarbon polymers with viscosities greater than about 50,000 mPas include polybutene, polybutene terephthalate, polydecene, polycyclopentadiene, and similar linear and branched high molecular weight hydrocarbons. .

Preferred film-forming polymers include a combination of R ₃ SiO _1/2 “M” units, R ₂ SiO “D” units, RSiO _3/2 “T” units, SiO ₂ “Q” units, R _n SiO _{( 4-n) / 2} , an organosiloxane resin containing a relative ratio satisfying the relational expression (n is a value of 1.0 to 1.50, R is a methyl group). It should be noted that as little as 5% silanol or alkoxy functionality may also be present in the resin structure as a result of processing. The organosiloxane resin must be solid at about 25 ° C. and have a molecular weight in the range of about 1,000 to about 10,000 grams / mole. The resin is soluble in organic solvents or volatile carriers such as toluene, xylene, isoparaffins, and cyclosiloxanes, which are crosslinked to the extent that the resin is insoluble in the volatile carrier. Indicates no. Particularly preferred are resins containing repeating monofunctional or R ₃ SiO _1/2 “M” units and tetrafunctional or SiO ₂ “Q” units, as well as US Pat. No. 5,330,747 (Krzysik ), Issued July 19, 1994) (also known as “MQ” resin) as disclosed in (incorporated herein by reference). In the present invention, the ratio of “M” functional units to “Q” functional units is preferably about 0.7 and the value of n is 1.2. Organosiloxane resins such as these are commercially available, for example, Wacker 803 and 804 available from Wacker Silicones Corporation (Adrian, Michigan), Shin-Etsu Chemical (Shin- KP545 from Etsu Chemical) and G.A. available from General Electric Company. E. 1170-002.

Humectant The humectant herein is selected from the group consisting of polyhydric alcohols, water-soluble alkoxylated nonionic polymers, and mixtures thereof. Polyhydric alcohols useful herein include glycerin, propylene glycol, 1,3-butylene glycol, dipropylene glycol, diglycerin, sodium hyaluronate, and mixtures thereof.

  The composition of the present invention may further comprise a humectant in an amount of about 1% to about 15%, preferably 2% to about 7% by weight of the total composition.

  Commercially available humectants herein include glycerin available from Asahi Denka, propylene glycol under the trade name LEXOL PG-865 / 855 available from Inolex, 1 available from BASF. , 2-propylene glycol USP, 1,3-butylene glycol available from Kyowa Hakko Kogyo, dipropylene glycol with the same trade name as available from BASF, available from Solvay GmbH Trade name Diglycerol diglycerol, Trade name ACTIMOIST sodium hyaluronate available from Active Organics, AVIAN Sodium hyaluronate series available from Intergen Available from Ichimaru Pharcos Potent sodium hyaluronate.

UV Absorber The composition of the present invention may comprise a safe and effective amount of a UV absorber. A wide variety of conventional UV protection agents are suitable for use herein, such as US Pat. No. 5,087,445 (issued February 11, 1992, Haffey et al.); US Pat. No. 5,073,372 (Turner et al., Issued December 17, 1991); US Pat. No. 5,073,371 (Turner et al., Issued December 17, 1991); Segarin et al., Cosmetics Science and Technology (1972), Chapter 8, pages 189 et seq. When included, the composition comprises from about 0.5% to about 20%, preferably from about 1% to about 15% UV absorber.

  UV absorbers useful herein include, for example, 2-ethylhexyl-p-methoxycinnamate (commercially available as PARSOL MCX), butylmethoxydibenzoyl-methane, 2-hydroxy-4-methoxy. Benzo-phenone, 2-phenylbenzimidazole-5-sulfonic acid, octyldimethyl-p-aminobenzoic acid, octocrylene, 2-ethylhexyl N, N-dimethyl-p-aminobenzoate, p-aminobenzoic acid, 2-phenylbenz Imidazole-5-sulfonic acid, octocrylene, oxybenzone, homomenthyl salicylate, octyl salicylate, 4,4′-methoxy-t-butyldibenzoylmethane, 4-isopropyldibenzoylmethane, 3-benzylidene camphor, 3- (4-methylbenzylidene N) camphor, Eusolex® 6300, Octocrylene, Avobenzone (commercially available as Parsol 1789), and mixtures thereof.

Thickeners Thickeners can be used herein to solidify the solid water-in-oil or oil-in-water compositions of the present invention. When used, the thickening agent remains about 5% of the total composition.

  Thickeners useful herein are selected from the group consisting of gelling agents, inorganic thickeners, silicone elastomers, and mixtures thereof. The amount and type of thickener is selected depending on the desired viscosity and properties of the product.

  Gelling agents useful as the thickener of the present invention include esters and amides of fatty acid gelling agents, hydroxy acids, hydroxy fatty acids, other amide gelling agents, and crystalline gelling agents.

N-acyl amino acid amides useful herein are prepared from glutamic acid, lysine, glutamine, aspartic acid and mixtures thereof. Particularly preferred are n-acyl glutamic amides corresponding to the following formula: R 2 —NH—CO— (CH 2) 2 —CH— (NH—CO—R 1) —CO—NH—R 2
Wherein R 1 is an aliphatic hydrocarbon radical having from about 12 to about 22 carbon atoms and R 2 is an aliphatic hydrocarbon radical having from about 4 to about 12 carbon atoms. Non-limiting examples of these include n-lauroyl-L-glutamic acid dibutylamide, n-stearoyl-L-glutamic acid diheptylamide, and mixtures thereof. Most preferred is n-lauroyl-L-glutamic acid dibutylamide, also called dibutyllauroylglutamide. This material is commercially available under the trade name gelling agent GP-1 available from Ajinomoto.

Other gelling agents suitable for use in the composition include 12-hydroxystearic acid, esters of 12-hydroxystearic acid, amides of 12-hydroxystearic acid, and combinations thereof. These preferred gelling agents include those corresponding to the following formula.
R1-CO- (CH2) 10-CH- (OH)-(CH2) 5-CH3
Wherein R 1 is R 2 or NR 2 R 3, and R 2 and R 3 are hydrogen or branched or cyclic and contain about 1 to about 22 carbon atoms; preferably about 1 to about 18 carbon atoms Having an alkyl, aryl, or arylalkyl radical. R2 and R3 may be the same or different; however, at least one is preferably a hydrogen atom. Among these gelling agents, 12-hydroxystearic acid, 12-hydroxystearic acid methyl ester, 12-hydroxystearic acid ethyl ester, 12-hydroxystearic acid stearyl ester, 12-hydroxystearic acid benzyl ester, 12 -Hydroxystearic acid amide, 12-hydroxystearic acid isopropylamide, 12-hydroxystearic acid butyramide, 12-hydroxystearic acid benzylamide, 12-hydroxystearic acid phenylamide, 12-hydroxystearic acid t-butylamide Cyclohexylamide of 12-hydroxystearic acid, 1-adamantylamide of 12-hydroxystearic acid, 2-adamant of 12-hydroxystearic acid Ruamido, diisopropylamide of 12-hydroxystearic acid, and mixtures thereof, even more preferably those selected 12-hydroxystearic acid, isopropyl amide of 12-hydroxystearic acid, and combinations thereof. Most preferred is 12-hydroxystearic acid.

  Suitable amide gelling agents include disubstituted or branched monoamide gelling agents, single substituted or branched diamide gelling agents, triamide gelling agents, and combinations thereof, including glutamic acid, lysine, glutamine, asparagine. Excluded are n-acyl amino acid derivatives selected from the group consisting of n-acyl amino acid amides, n-acyl amino acid esters prepared from apartic acids and combinations thereof, which are described in US Pat. No. 5,429. 816, in detail.

  Alkylamides or di- and tri-basic carboxylic acids or anhydrides suitable for use in the composition include citric acid, tricarballylic acid, aconitic acid, nitrilotriacetic acid, succinic acid and itaconic acid alkyl. Amides such as 1,2,3-propanetributylamide, 2-hydroxy-1,2,3-propanetributylamide, 1-propene-1,2,3-trioctylamide, N, N ′, N ''-tri (acetodecylamido) amine, 2-dodecyl-N, N′-dihexylsuccinamide and 2dodecyl-N, N′-dibutylsuccinamide. Preferred are alkyl amides of dicarboxylic acids, such as diamides of alkyl succinic acids, alkenyl succinic acids, alkyl succinic anhydrides, and alkenyl succinic anhydrides, more preferably 2-dodecyl-N, N′-dibutylsuccinamide. .

  Inorganic thickeners useful herein include hectorite, bentonite, montmorillonite, and benton clays that have been modified to be compatible with oil. Preferably the modification is quaternization with an ammonium compound. A preferred inorganic thickener includes quaternary ammonium-modified hectorite. Commercially available oil-swelling clay materials include benzyldimethylstearylammonium hectorite under the trade name Bentone 38 available from Elementis.

Hydrophobic Skin Active Agents Hydrophobic skin lightening agents useful herein include ascorbyl tetraisopalmitate (eg, VC-IP available from Nikko Chemical), ascorbyl palmitate (eg, Roche Vitamins) (Available from Roche Vitamins), ascorbic acid derivatives, such as ascorbyl dipalmitate (eg, NIKKOL CP available from Nikko Chemical); undecylenoylphenylalanine (eg, Sepic ( SEPIWHITE MSH available from Seppic); octadecene diacid (eg, ARLATONE DIOIC DCA available from Uniquema); oenothera biennis sead extract, and pyrus malus) Berry extract, smart vector (SMATVECTOR) UV and available hyaluronic acid filling Sphere from COLETICA (Hyaluronic Filling Sphere) magnesium ascorbyl phosphate, and mixtures thereof in the like.

  Other hydrophobic skin active agents useful herein include tocopheryl nicotinate, benzoyl peroxide, 3-hydroxybenzoic acid, flavonoids (eg, flavanone, chalcone), farnesol, phytantriol, glycolic acid, Lactic acid, 4-hydroxybenzoic acid, acetylsalicylic acid, 2-hydroxybutanoic acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic acid, cis-retinoic acid, trans-retinoic acid, retinol, retinyl esters (eg, retinyl Propionate), phytic acid, N-acetyl-L-cysteine, lipoic acid, tocopherol and its esters (eg, tocopheryl acetate: DL-α-tocopheryl acetate available from Eisai), azelaic acid Arachidonic acid, tetra Cyclin, ibuprofen, naproxen, ketoprofen, hydrocortisone, acetminophen, resorcinol, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide , Octopirox, lidocaine hydrochloride, clotrimazole, miconazole, ketoconazole, neomycin sulfate, theophylline, and mixtures thereof.

Composition Preparation The present invention also relates to suitable methods of making the compositions of the present invention. Although the composition can be made by any method known in the art, the method herein is aesthetically appealing but is useful for producing the composition in a cost effective manner. It is advantageous.

The method is particularly useful for the present composition, wherein each of the first and second layers is about 100 mPas to about 10,000 mPas, preferably when subjected to a temperature of about 55 ° C to about 90 ° C, preferably Gives a viscosity of 300 mPas to 3000 mPas. The method consists of the following steps:
(A) providing the composition of the first layer and the composition of the second layer in a fluid state in separate containers;
(B) The composition of the first layer is separately distributed to the same package by the first nozzle and the composition of the second layer is separately distributed by the second nozzle, and the composition of the first layer and the second Maintaining the temperature of the composition of the layer between 55C and 90C, preferably between 60C and 75C;
(C) a step of consolidating the moved first layer and second layer in the package;

Each of the first and second layer compositions can be made by any suitable method known to provide a water-in-oil emulsion and an oil-in-water emulsion composition. In a suitable method, the first layer of water-in-oil emulsion composition comprises:
1) To make a lipophilic mixture, volatile silicone oil, non-volatile oil, solid wax, lipophilic surfactant, slurry of pigment dispersed in oil, and any other hydrophobic in liquid state at room temperature A step of dissolving a functional material in a sealed tank;
2) adding the remaining pigment and powder to such lipophilic mixture and dispersing at about 20-30 ° C. using a homogenizer;
3) Apart from 1) and 2), heating and dissolving the humectant and any other hydrophilic material in water at about 75-80 ° C and then cooling to about 20-30 ° C;
4) adding the product of step 3) to the product of step 2) to cause emulsification; 5) heating the solid wax and any remaining hydrophobic material at about 80-85 ° C; Made from adding to the product.

In a preferred method, the second layer oil-in-water emulsion composition comprises:
1) dissolving water, humectants, fatty acid salts and any other hydrophilic material in liquid form at about 80-85 ° C. in a closed tank to make a hydrophilic mixture;
2) adding the remaining pigment and powder to such a hydrophilic mixture and dispersing using a homogenizer;
3) dissolving a volatile silicone oil, a non-volatile oil, an aliphatic compound in the oil, and any other hydrophobic material in a liquid state at room temperature in a closed bath to make a lipophilic mixture;
4) adding the product of step 3) to the product of step 2) to cause emulsification;
5) Prepared from the step of cooling the finally obtained emulsion to a temperature of about 60-80 ° C.

  The resulting first and second layer compositions, which are still liquid at such temperatures, are filled into hermetic containers and allowed to cool to room temperature using a normal cooling unit.

  Referring to FIG. 1, the first and second layer compositions made according to the above process are remelted at 70 ° C. and degassed in two separate containers 101 and 102. Such containers are usually tanks equipped with suitable mixing means 103 and 104 for mixing and homogenization. The degassed bulk composition is then transferred to two separate filling hoppers 105 and 106 from which the fluid state first and second layer compositions, for the first layer first nozzle 109, second The layer is delivered to pipes 107, 108 leading to the second nozzle 110. In a preferred embodiment, the second nozzle 110 is comprised of two separate nozzles. The first and second nozzles terminate at the filling site 121. In the transfer and filling process, the heat composition is used to maintain the bulk composition at a temperature in the range of about 55 ° C to about 90 ° C, preferably about 60 ° C to about 75 ° C.

  On the other hand, a receiving part of the package body for containing the composition is brought to the filling site 121 by suitable means, for example a movable belt conveyor 120. In a preferred foundation embodiment of the present invention, the receiving portion of the package body is a pan made of a metal or plastic material. In the following description, the receiving portion of the package body is designated as “pan” and so called. 2 and 3, the bread is brought to the filling site 200 by, for example, a movable bar 201. Filling site 200 consists of a table 202 for placing a pan, where the package body receives fluid first and second layer compositions from a first nozzle and a second nozzle. The table 202 may move or rotate as the design is indicated by the flow of the first and second layer compositions in the fluid state. The end points of the first and second nozzles may also move or rotate. Various designs can be formed by combining the movement of the end points of the table and the nozzle. Here, the first and second layer compositions are advantageously visually distinguishable so that the design is clear and distinguishable.

  FIG. 4 shows an embodiment of a design made by such movement of the table and / or nozzle end points during filling. The design of (iii) can be produced by stabilizing one nozzle and moving the other nozzle in the linear direction. The spiral design of (i) can be produced by moving the first and second nozzles away from each other in the linear direction and simultaneously rotating the table as shown in FIG. Another spiral design (iv) can be made in a similar manner, except that one of the first or second nozzles is split into two, as shown in FIG. 3 (c). Yet another spiral design (v) can be made with the same nozzle configuration shown in FIG. 3 (c), except that the filling speed and table rotation speed are adjusted. The other spiral designs (vi) and (vii) of FIG. 4 can be made with a nozzle configuration as shown in FIG. 3 (d), where one of the first or second nozzles has three branches. It is divided into. The marble design (ii) of FIG. 4 can be produced by joining the first nozzle and the second nozzle just before the end point as shown in FIG. 3 (b). In such embodiments, the temperature of the first and second layer compositions is sufficiently fluid for the layers to flow but must be carefully controlled between 60 ° C. and 75 ° C. so that they are not completely mixed together at the junction. Don't be.

  Referring again to FIG. 1, bread filled with the first and second layer compositions is sent to another movable belt conveyor and moved to a cooling unit 141 for cooling and consolidation of the composition. Such compositions containing volatile components such as water, silicone oil and others are packaged in airtight containers so that they are not degraded during storage. In a preferred foundation embodiment of the present invention, the composition is arranged in a compact housing the hermetic container in which it is contained. The compact may further contain a recess for receiving a mirror and a sponge applicator.

  The following examples further describe and demonstrate preferred embodiments within the scope of the present invention. Since many variations of the invention are possible without departing from the spirit and scope of the invention, these examples are given for illustrative purposes only and are to be construed as limiting the invention. Should not.

1) Examples 1 to 5 (W / O solid emulsion formulation for first layer)
The following makeup composition is formed by the method described herein:

Definition of components * 1 Cyclopentasiloxane: SH245 available from Dow Corning
* 2 PEG-9 polydimethylsiloxyethyl dimethicone: KF-6028 available from Shin-Etsu Chemical Co., Ltd.
* 3 Dimethicone and dimethicone / vinyl dimethicone crosspolymer: KSG-16 available from Shin-Etsu Chemical Co., Ltd.
* 4 Trimethylsiloxysilicate and cyclopentasiloxane: Trimethil siloxysilicate / cyclomethicone D5 blend available from GE Toshiba Silicones * 5 Isotridecyl isononanoate: available from Croda Crodamol TN
* 6 Sorbitan monoisostearate: Crill 6 available from Croda
* 7 Iron oxide, cyclopentasiloxane, dimethicone, and hydrogenated disodium glutamate: SA / NAI-Y-10 / D5 (70%), SA / NAI-R-10 / D5 available from Miyoshi Kasei (65%) and SA / NAI-B-10 / D5 (75%)
* 8 Titanium dioxide, dimethicone, and hydrogenated disodium glutamate: SA / NAI TR-10 available from Miyoshi Kasei
* 9 Titanium dioxide, talc and methicone: SI-T-CR-50Z available from Miyoshi Kasei
* 10 Alumina, titanium dioxide and methicone: SI-LTSG30AFLAKEH (5%) LHC available from Miyoshi Kasei
* 11 Titanium dioxide and methicone: SI FTL-300 available from Miyoshi Kasei
* 12 Titanium dioxide, dimethicone, aluminum hydroxide and stearic acid: SAST-UFTR-Z available from Miyoshi Kasei
* 13 Methyl methacrylate cross polymer and methicone: SI-L-XC-F006Z available from Miyoshi Kasei
* 14 Silica and methicone: SI-LDEX H-52 available from Miyoshi Kasei
* 15 Vinyl dimethicone / methicone silsesquioxane crosspolymer: KSP-100 available from Shinetsu Chemical
* 16 Mica, zinc oxide, methicone and hydroxyapatite: SI-PLV-20 available from Miyoshi Kasei
* 17 Talc and methicone: SI talc CT-20 available from Miyoshi Kasei
* 18 Polyvinylpyrrolidone: PVP K-30 available from BASF
* 19 Glycerin: Glycerin USP available from Asahi Denka
* 20 Butylene glycol: 1,3 butylene glycol available from Kyowa Hakko Kogyo * 21 Candelilla wax: Candelilla wax NC-1630 available from Cerarica Noda
* 22 Ceresin: Ozochelite wax SP-1021 available from Strahl & Pitsh

Method of Preparation The make-up compositions of Examples 1-1 to 5-1 are prepared as follows:
1) To make a silicone layer, mix component numbers 1-7 using a suitable mixer until homogeneous.
2) To make a pigment mixture, mix component numbers 8-17 with a suitable mixer until homogeneous, then grind it with a grinder. The pigment mixture is then added to the silicone phase using a suitable mixer until homogeneous.
3) To make the aqueous phase, dissolve component numbers 18-22 using a suitable mixer until all components are dissolved, then add it to the silicone phase and pigment mixture and use a homogenizer Make an emulsion at room temperature.
4) Add component numbers 23-24 to the emulsion and then heat it at 85 ° C. in a closed bath to dissolve.
5) Finally, the emulsion is filled in an airtight container and cooled to room temperature using a cooling unit.

2) Examples 1 to 5 (O / W solid emulsion formulation for the second layer)
The following makeup composition is formed by the method described herein:

Definition of components * 1 Cyclopentasiloxane: SH245 available from Dow Corning
* 2 Steric acid: 750 stearic acid available from Kao
* 3 Glyceryl stearate: Arlacel 161 available from Uniqema
* 4 Tocopheryl acetate: DL-α-tocopheryl acetate available from Eisai * 5 Isotridecyl isononanoate: Crodamol TN available from Croda
* 6 Phenyltrimethicone: KF-56 available from Shin-Etsu Chemical Co., Ltd.
* 7 Titanium dioxide: Titanium dioxide CR-50 available from Ishihara Techno Corporation
* 8 Mica: Mica Y-3000 available from Yamaguchi Mica
* 9 Talc: Talc JA13R available from Asada Milling
* 10 Ascorbyl glucoside: Ascorbyl glucoside available from Hayashibara * 11 N-acetyl D-glucosamine: N-acetyl D-glucosamine available from Technical Sourcing International * 12 Ascorbyl magnesium phosphate : Magnesium ascorbyl phosphate available from Showa Denko * 13 Niacinamide: Niacinamide available from Reilly Industries Inc. * 14 Panthenol: Alps Pharmaceutical Inc. DL-panthenol available from) * 15 Glycerin: Glycerin USP available from Asahi Denka
* 16 Butylene glycol: 1,3-butylene glycol available from Kyowa Hakko Kogyo

Method of Preparation The makeup compositions of Examples 1-2 to 5-2 are prepared as follows:
1) In order to prepare an aqueous phase, component numbers 11 to 23 are mixed using a suitable mixer, and heated to 75 ° C. to dissolve.
2) To make the pigment mixture, mix component numbers 7-10 with a suitable mixer until homogeneous, then grind using a grinder. The pigment mixture is then added to the aqueous phase using a suitable mixer until homogeneous.
3) To make the oil phase, mix component numbers 1-6 using a suitable mixer, dissolve by heating at 80 ° C., then add it to the water phase and pigment mixture and use a homogenizer Make an emulsion at room temperature.
4) Finally, the emulsion is filled into an airtight container and cooled to room temperature using a cooling unit.

  Five different double layer foundation products were prepared using the above-described preparation methods, and the second layer composition 1-2-5 corresponding to the first layer composition 1-1 to 5-1 of Example 1-5. 2 can be combined. In particular, the method for preparing the double layer foundation product comprises: (a) the first layer composition of Examples 1-1 to 5-1 and the second layer composition of Examples 1-2 to 5-2 in two separate containers. Re-melting and degassing the material, and (b) simultaneously distributing the first layer composition by the first nozzle and the second layer composition by the second nozzle into the same package at the same time. A step of maintaining the composition and the second layer composition at a temperature of 60 ° C. to 75 ° C., and (c) a step of solidifying the moved first layer and second layer in a package. The double layer foundation product of the present invention not only has a more attractive aesthetic appearance, but also provides various skin benefits. For example, Example 1 can provide lightening skin benefits and anti-aging benefits by including ascorbyl glucoside, N-acetyl D-glucosamine and niacinamide in the second layer, and Example 2 contains ascorbyl glucoside in the second layer. Inclusion can provide a lightening skin benefit, Example 3 can provide a lightening skin benefit by including magnesium ascorbyl phosphate in the second layer, and Example 4 can provide N-acetyl D-glucosamine and Inclusion of niacinamide can provide anti-aging benefits, Example 4 can provide lightening skin benefit and anti-aging benefits by including ascorbyl magnesium phosphate, N-acetyl D-glucosamine and niacinamide in the second layer .

  All references cited in the description of the “Best Mode for Carrying Out the Invention” are incorporated herein by reference in their relevant parts, and any citation of any document is prior art to the present invention. Should not be construed as an admission. To the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of a term in a document incorporated by reference, the meaning or definition given to that term in this document applies. Shall be.

  While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, it is intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

  This specification concludes with the claims that particularly point out and distinctly claim the invention, but the invention shall be construed in conjunction with the following description of the preferred non-limiting embodiments and representative examples in conjunction with the accompanying drawings. Are considered better understood.

1 is a schematic diagram of a preferred embodiment of the process of the present invention. FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG. 1. FIG. 2 is a schematic diagram of a preferred embodiment of the process of the present invention focusing on the filling process. 1 is a schematic diagram of a preferred embodiment of the visual appearance of the composition. The diagram which shows the preferable range of the viscosity difference between the composition of the 1st layer of this invention, and a 2nd layer, and a density difference.

Claims (13)

A solid skin care comprising (A) a first layer that is solid at 45 ° C. and a water-in-oil emulsion and (B) a second layer that is solid at 45 ° C. and is an oil-in-water emulsion containing a benefit agent. A composition comprising:
Here, the first layer and the second layer have different compositions, and the first layer and the second layer are in the same package in such a manner that the first layer and the second layer can be applied simultaneously. Provided,
The composition of the first layer is
(A) volatile silicone oil,
(B) non-volatile oil,
(C) pigment powder,
(D) solid wax,
(E) a lipophilic surfactant, and (f) a water-in-oil emulsion containing water,
The composition of the second layer is
(A ') water,
(B ′) volatile silicone,
(C ′) pigment powder,
(D ′) a hydrophilic surfactant,
(E ′) non-volatile oil,
An oil-in-water emulsion composition comprising (f ′) an aliphatic compound and / or fatty acid salt, and (g ′) a benefit agent,
The aliphatic compounds and fatty acid salts are stearic acid, sodium stearate, palmitic acid, stearyl alcohol, cetyl alcohol, behenyl alcohol, stearyl alcohol having an average of 1 to 5 ethylene oxide units or polyethylene glycol ether of cetyl alcohol, and these Selected from a mixture of
A solid skin care composition wherein the composition is a cosmetic foundation and the benefit agent is a water-soluble skin active agent.   The composition of claim 1, wherein the first layer and the second layer are visually distinguishable.   The composition of claim 2, wherein at least one of the first layer and the second layer includes a colorant to make the layers visually distinguishable.   The composition according to claim 1, wherein the weight ratio of the first layer to the second layer is 1:99 to 99: 1.   The composition of claim 1, wherein the composition of the first layer and the composition of the second layer each provide a viscosity of 100 mPas to 3000 mPas when subjected to a temperature of 55 ° C. to 90 ° C. The difference in viscosity and density between the composition of the first layer and the composition of the second layer is represented by a (0.16 g / cm ³ , −1600 mPas), b ( 2. Within the region defined by the points 0.16 g / cm ³ , 600 mPas), c (−0.16 g / cm ³ , −600 mPas) and d (−0.16 g / cm ³ , 1600 mPas). A composition according to 1.

  The composition of claim 1, wherein the benefit agent is selected from the group consisting of a skin lightening agent, an anti-aging agent, and mixtures thereof.   The composition according to claim 7, wherein the skin lightening agent is an ascorbic acid compound. The composition according to claim 7, wherein the anti-aging agent is a vitamin B3 compound. (A) providing the composition of the first layer and the composition of the second layer in a fluid state in separate containers;
(B) Dispensing the composition of the first layer into the same package separately by the first nozzle and the composition of the second layer by the second nozzle, and simultaneously the composition of the first layer and the second Maintaining the temperature of the composition of the layer between 55 ° C. and 90 ° C . ;
(C) The method of manufacturing the composition of Claim 5 including the process of solidifying the moved 1st layer and 2nd layer in the said package.   The method of claim 10, wherein the package is rotated when filling the package with the first and second layers.   The method of claim 10, wherein the second nozzle is comprised of two separate nozzles.   The method of claim 10, wherein the second nozzle is comprised of three separate nozzles.

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